Increase in preterm births21st April 2006
Doctors in this week’s BMJ express concern over the apparent increase in preterm births.
A study from Denmark, published on bmj.com in February, found that preterm deliveries increased by 22% from 1995 to 2004. Even among low risk women aged 20-40, there was a 51% increase in early delivery.
The research also showed that assisted conceptions, multiple pregnancies, and elective deliveries increased during this time and were associated with early birth.
Doctors in the UK now warn that, if these trends are real, the impact for society is considerable.
Andrew Shennan and Susan Bewley of St Thomas’ Hospital, London, write that preterm deliveries account for fewer than 1 in 10 births but result in 75% of neonatal deaths and most neonatal intensive care admissions.
One in 4 survivors born less than 25 weeks’ gestation have severe mental or physical disability; even beyond 32 weeks, 1 in 3 children have educational and behavioural problems by the age of 7.
The authors say that possible reasons for the findings from Denmark are numerous and difficult to explain, but they may include extremes of maternal weight, smoking, ethnic origin, and social class. A trend towards earlier ultrasound for dating and screening might also play a role.
They state that untangling the underlying causative factors may be difficult, but general public health measures to do with teenage and middle age pregnancy, smoking, prevention of sexually transmitted diseases, obesity, and social inequities are a good start.
They conclude that obstetricians should re-evaluate the risks and benefits of delivering babies earlier, saying that if these findings from Denmark are true, the implications for neonatologists, health economists, teachers, parents, and children themselves are worrying.
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Title: Increase in preterm births
Author: Sue Knights
Article Id: 244
Date Added: 21st Apr 2006